negotiator.boaframework.opponentmodel

Class CUHKFrequencyModelV2

java.lang.Object

negotiator.boaframework.OpponentModel

negotiator.boaframework.opponentmodel.CUHKFrequencyModelV2

public class CUHKFrequencyModelV2
extends OpponentModel

Optimized version of the ANAC2012 CUKHAgent opponent model. Adapted by Mark Hendrikx to be compatible with the BOA framework. This model keeps track of how many times each value has been offered. In the author's implementation the sum of the value scores is used to quantify the quality of the bid. In my BOA-compatible implementation I divide the sum of the value scores by the maximum possible score to normalize the score to a utility. Note that after 100 bids the model is no longer updated. Tim Baarslag, Koen Hindriks, Mark Hendrikx, Alex Dirkzwager and Catholijn M. Jonker. Decoupling Negotiating Agents to Explore the Space of Negotiation Strategies

Author:

Mark Hendrikx

Field Summary

Fields inherited from class negotiator.boaframework.OpponentModel

negotiationSession, opponentUtilitySpace

Constructor Summary

Constructors

Constructor and Description
CUHKFrequencyModelV2()

Method Summary

Methods

Modifier and Type	Method and Description
double	getBidEvaluation(Bid bid) Determines the utility of a bid according to the preference profile.
java.lang.String	getName()
UtilitySpace	getOpponentUtilitySpace() Returns the estimated utilityspace.
double	getWeight(Issue issue) This model does not rely on issue weights.
void	init(NegotiationSession negotiationSession, java.util.HashMap<java.lang.String,java.lang.Double> parameters) initialization of the model in which the issues are cached and the score keeper for each issue is created.
void	updateModel(Bid bid, double time) This function updates the opponent's Model by calling the updateStatistics method

Methods inherited from class negotiator.boaframework.OpponentModel

cleanUp, getIssueWeights, init, isCleared, setOpponentUtilitySpace, setOpponentUtilitySpace, updateModel

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CUHKFrequencyModelV2

public CUHKFrequencyModelV2()

Method Detail

init

public void init(NegotiationSession negotiationSession,
        java.util.HashMap<java.lang.String,java.lang.Double> parameters)
          throws java.lang.Exception

initialization of the model in which the issues are cached and the score keeper for each issue is created.

Overrides:

init in class OpponentModel

Parameters:

negotiationSession - reference to the state of the negotiation

Throws:

java.lang.Exception

updateModel

public void updateModel(Bid bid,
               double time)

This function updates the opponent's Model by calling the updateStatistics method

Specified by:

updateModel in class OpponentModel

Parameters:

bid - to update the model with.

time - at which the bid was offered.

getBidEvaluation

public double getBidEvaluation(Bid bid)

Description copied from class: OpponentModel

Determines the utility of a bid according to the preference profile.

Overrides:

getBidEvaluation in class OpponentModel

Parameters:

bid - of which the utility is calculated.

Returns:

Utility of the bid

getOpponentUtilitySpace

public UtilitySpace getOpponentUtilitySpace()

Returns the estimated utilityspace. After 100 unique bids the opponent model is not longer updated, and therefore a cached version can be used.

Overrides:

getOpponentUtilitySpace in class OpponentModel

Returns:

the estimated utility space of the opponent

getWeight

public double getWeight(Issue issue)

This model does not rely on issue weights. Therefore, the issue weight is uniform.

Overrides:

getWeight in class OpponentModel

Parameters:

issue - from which the weight should be returned

Returns:

weight of the given issue

getName

public java.lang.String getName()

Overrides:

getName in class OpponentModel

Returns:

name of the opponent model.